Hi guys, I have had the powermax complete installed for a few years now and have just completed a full buttery change after seeing a low battery on the siren. I got the old line failure pop up on the screen not long after this. The issue with my system is every time I connect the powermax to my telephone line, it takes over my telephone line. Then, tells me to hang up the receiver and try again? Then it goes through about 5 chords of a constant tone whine and then the line goes dead. Do you guys know if the Powermax is faulty or is there a setting I’m missing? I’ve recently reseted everything but to no avail. Cheers